Ever since yesterday have received this message when trying to post a picture. Can anyone tell me what I have done wrong?

Warning: getimagesize: Unable to open '/client/home/gsusong/tcbuploads/Apple_' for reading. in /client/home/gsusong/docs/tcbuploads.php on line 160

Warning: Cannot add header information - headers already sent by (output started at /client/home/gsusong/docs/tcbuploads.php:160) in /client/home/gsusong/docs/tcbuploads.php on line 171

Thanks Fred